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Author Topic: X20 Pickup Selector Switch Cuting Out Sound  (Read 593 times)

Offline ripto

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X20 Pickup Selector Switch Cuting Out Sound
« on: December 31, 2016, 06:26:43 PM »
Hello.  I picked up my brother's old X20 a few months ago to see how a HSH would sound through my Marshall SL5.  Turns out I could only get sound out of it if I put the pickup selector switch in the neck position and forced it a little further.  Seemed like there was a loose connection or something.  I took the back panel off but I can't really see anything loose out in the open, and the switch housing looks to be sealed.  Anyone have any insight or wiring diagrams?  Thanks.  Pics are linked below.

https://postimg.org/image/mwisqk5g9/
https://postimg.org/image/yaptmxsn7/
https://postimg.org/image/ayci6v2hb/


Offline bigcity2

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Re: X20 Pickup Selector Switch Cuting Out Sound
« Reply #1 on: December 31, 2016, 08:20:20 PM »
Before you do any replacing of parts, buy a can of "DeoxIT" D-5 from Stu Mac and  ( follow the instructions ) spray the pots and selector switch down.  Sounds like the pots and selector switch have a little oxidation on the contacts.......  D-5 will absolutely get rid of the oxidation and improves conductivity ....if that's the problem.  D-5 is a little expensive (about $20.00 for a 5 oz. can) but the stuff really works and a can will clean all the contacts in 10 to 15 guitars.

Offline Tony Raven

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Re: X20 Pickup Selector Switch Cuting Out Sound
« Reply #2 on: January 01, 2017, 02:11:28 AM »
"...to see how a HSH would sound..." The X-20 is h-s-s. I think the v.2 X-40 was the only X in h-s-h. Well, whatever. ???

DeoxIT is great stuff. (Don't use it on live or hot circuits, of course.) Not cheap, but a can lasts quite a while for most guitar owners.

However, as with noisy knobs (amp or guitar), in most situations much of the problem is cleared up by simply working the switch back-&-forth a couple dozen times. Even with DeoxIT you still need to do that anyway, like it says on the label:
Quote
Operate the part/device to help break up oxides and contamination.

Changing the switch? Not a great idea unless absolutely necessary. Anyone who doesn't know how a five-way blade switch operates should (IMNSHO) not be messing with it.

And similar switches can be found on eBay, in a few minutes of scanning photos. (It's NOT a sealed switch, btw.) Find an similar switch, then swap it over lug-by-lug-- no wiring diagramme needed.

Lacking an identical switch, there's any number of inexpensive five-way blades around. The X-20's is old-fashioned; nowadays, even the cheapest run all the contacts out to lugs across the end. Anyone who can read a simple circuit diagramme won't have any problem figuring out which of these match up to the original switch.
M1SDL; XB-400 (natural), XB-400 (burg), XB-500 (teal); X-10, X-33; D46CESP, WCSD30SCE; BT-3, BT-4, BT-6, JB-80; WS-4; WI-66V; Lyon LCT24; OS Autoharps

resident troublemaker: http://forum.frugalguitarist.com/

Offline ripto

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Re: X20 Pickup Selector Switch Cuting Out Sound
« Reply #3 on: January 21, 2017, 12:16:45 PM »
Sorry for my late reply, I got busy after posting.  Thanks for the info.  You are correct, I misspoke, the X20 is HSS.

Could oxidation get into the solder joints and break them up or would that only be on the outer surfaces?